Question

What is an equation of the line in slope intercept form?
m=4 and the y-intercept is (0,5)
A.y=4x-5
B.y=-5x+4
C.y=4x+5
D.y=5x+4

Answer 1

In the equation of a straight line (when the equation is written as "y = mx + b"), the slope is the number "m" that is multiplied on the x, and "b" is the y-intercept, where the line crosses the y-axis.

When x = 0, the corresponding y-value is the y-intercept.
Since the y-intercept in your question is (0, 5), then the b would be 5, because x = 0 and y = 5.
You have been given the m (or slope) of the equation, m = 4.
Now you will plug both values into the equation: y = mx + b.