PARCC Graph 2

Question 1

On a coordinate plane, what is the x-coordinate of the point where a line crosses the x-axis called?

Accepted Answer

The x-intercept

Answer

A line crosses the x-axis at its x-intercept, where y equals 0.

Question 2

A line passes through (0, 4) and has a slope of 2. What is its equation in slope-intercept form?

Accepted Answer

y = 2x + 4

Answer

Slope-intercept form is y = mx + b, so m = 2 and b = 4 gives y = 2x + 4.

Question 3

What is the slope of a horizontal line?

Accepted Answer

0

Answer

A horizontal line has no vertical change, so its slope is 0.

Question 4

Which quadrant contains the point (-3, -5)?

Accepted Answer

Quadrant III

Answer

Both coordinates are negative, which places the point in Quadrant III.

Question 5

What is the slope of the line through points (1, 2) and (3, 8)?

Accepted Answer

3

Answer

Slope equals (8 - 2)/(3 - 1) = 6/2 = 3.

PARCC Practice Test