Which of the following is an equation of a line with
a slope of 4 and a y-intercept of -1?
A y = 4x — 1
B y = 4x + 1
C y = – 1x + 4
D y = – 1x — 4
slope intercept form is y=mx+b m=4 b= -1
So A is right
@CodyJinks can you plz help with my other questions
I answered three of four
To find the equation of a line with a slope of 4 and a y-intercept of -1, we can use the point-slope form of a linear equation, which is:
y - y1 = m(x - x1)
where m is the slope and (x1, y1) represents the coordinates of a point on the line.
In this case, the slope is 4, and the y-intercept is -1. The y-intercept represents the point (0, -1) because it is the value of y when x is 0.
Substituting the values into the point-slope form, we get:
y - (-1) = 4(x - 0)
Simplifying, we have:
y + 1 = 4x
To match the given answer choices, we can rewrite the equation in the form of y = mx + b, where m is the slope and b is the y-intercept. Rearranging the equation, we get:
y = 4x - 1
Therefore, the equation of the line with a slope of 4 and a y-intercept of -1 is option A, y = 4x - 1.