ASVAB Math Knowledge Coordinate Geometry Practice Test 392824

Question 1 of 5
Slope-Intercept Equation

A line on the coordinate grid can be defined by a slope-intercept equation: y = mx + b. For a given value of x, the value of y can be determined given the slope (m) and y-intercept (b) of the line. The slope of a line is change in y over change in x, \({\Delta y \over \Delta x}\), and the y-intercept is the y-coordinate where the line crosses the vertical y-axis.

y = 2\(\frac{1}{2}\)x + 4

The endpoints of this line segment are at (-2, -1) and (2, 9). What is the slope-intercept equation for this line?

y = 3x - 1
y = -2\(\frac{1}{2}\)x + 4
y = 3x - 2
y = 2\(\frac{1}{2}\)x + 4