Algebra I Midterm Review (Unit 4, 5, & 6)

Which graph represents the inequality $-2x+7y\le112$ ?

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Which graph represents the inequality $-2x+3y>12$ ?

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Which coordinate pair is in the solution set for $y<1-6x$ ?

• (1, 0)

• (1, -1)

• (0, 1)

• (-1, 1)

What is the effect on the graph of the linear parent function, $f\left(x\right)=x$ , when $f\left(x\right)$ is replaced by $f\left(x+5\right)$ ?

• The graph of the line becomes steeper.

• The graph of the line shifts horizontally right 5 units.

• The graph of the line shifts vertically down 5 units.

• The graph of the line shifts horizontally left 5 units.

Line G is graphed on the coordinate plane. Which linear equation can be used to represent a line parallel to line G passing through the point (-6, 1)?

• $3x+2y=-16$

• $2x+3y=-9$

• $2x+3y=15$

• $3x+2y=20$

Line R is graphed on the coordinate plane. Which linear equation can be used to represent a line perpendicular to line R passing through the point (3, -6)?

•  $x-3y=21$ 

•  $3x+y=3$ 

•  $3x-y=15$ 

•  $3x-y=3$ 

Given the line $4y=12$ , which statement is NOT true?

• The line is parallel to the x-axis.

• The line is perpendicular to the y-axis.

• The line has a slope of zero.

• The line has an undefined slope.

A graph of a linear inequality in two variables is shown. Which linear inequality can be used to represent the graph?

• $y>\frac{1}{2}x-3$

• $y<2x-3$

• $y<\frac{1}{2}x-3$

• $y>2x-3$

Seven data points are graphed on the scatterplot. Which statement identifies the correlation coefficient between the two variables and the correct interpretation of the correlation coefficient measure of the strength of the linear association?

• r = -0.9886; The correlation coefficient indicates a weak, negative, linear correlation.

• r = -0.9886; The correlation coefficient indicates a strong, negative, linear correlation.

• r = 0.9773; The correlation coefficient indicates a strong, positive, linear correlation.

• r = 0.9773; The correlation coefficient indicates a weak, positive, linear correlation.

The population of Webb County, Texas, from the year 2000 through 2010 is shown in the graph. If the trend shown in the graph continues, what will be the population of Webb County in 2015?

• 307,000

• 278,500

• 471,500

• 158,000