Equation for Line

What is the y-intercept of a line that passes through the point (-2, -3) and has a slope m = 1/2 ?

• b = 2

• b = 3

• b = -2

• b = 5

What is the slope of a line that passes through the points (-1, 5) and (2, 3)

• m = 2/3

• m = -2/3

• m = 3/2

• m = 3

Which equation is being represented by this line?

• y = -1x + 2

• y = 1/2x + 2

• y = 3x -4

• y = -3x +2

Write the function rule for the following table.

•  5x

• 5x + 1

•  x + 5

•  x + 1

Is the graph linear, exponential or neither?

• Linear

• Exponential

• Neither

What is the equation for the line of best fit?

• y = ax + b

• y = mx + a

• y = mx + b

• y = mx + c

Answer explanation

The correct equation for the line of best fit is y = mx + b, where m represents the slope and b represents the y-intercept.

What is the equation of the line of best fit

• y= -2x + 10

• y= 10x+ 2

• y=2x+10

• y= 10

Answer explanation

The correct equation of the line of best fit is y= -2x + 10, as it represents the relationship between the variables with the least amount of error.

• y = 4x + 3
• y = 1/3x - 3
• y = 3x + 4
• y = -1/3x + 4

The graph above shows a line of best fit for data collected on the distance bicyclists have remaining in relation to the amount of time they have been riding.  What is the equation of the line of best fit?

• y = -25x + 170

• y = 25x + 170

• y = -(5/8) x + 170

• y = (5/8) x + 170

Answer explanation

The correct equation of the line of best fit is y = -25x + 170, which matches the first answer choice.

Which equation best represents the data?

• A  y = 2x + 2

• B  y= 1/2x - 2

• C  y = -2x + 2

• D  y = -1/2x + 2

Answer explanation

The correct equation is y = 2x + 2 because it best fits the data provided.