8C 4.2 - 4.3 Practice

Front

What is the slope of a line that is perpendicular to a line with a slope of m = 5/8?

Back

-8/5

Front

What does the y-intercept (0, -200) represent in a profit context?

Back

Before any haircuts are given, Adrienne's starting profit is –$200.

Front

Write the equation in point-slope form of the line that passes through the point (4, -7) with a slope of m = -1/4.

Back

y + 7 = -1/4(x - 4)

Front

Which line is PARALLEL to the graph of y = -6x + 3 and goes through the point (-1, 4)?

Back

y = -6x + 4

Front

Identify the equation written in STANDARD form.

Back

-7x + 2y = 9

Front

What is the definition of slope in a linear equation?

Back

Slope is the ratio of the rise (change in y) to the run (change in x) between two points on a line.

Front

How do you find the y-intercept of a linear equation?

Back

Set x = 0 in the equation and solve for y.

Front

What is the point-slope form of a linear equation?

Back

y - y1 = m(x - x1), where m is the slope and (x1, y1) is a point on the line.

Front

What does it mean for two lines to be parallel?

Back

Two lines are parallel if they have the same slope and will never intersect.

Front

How do you convert from point-slope form to slope-intercept form?

Back

Solve for y in the point-slope equation to get it into the form y = mx + b.