Slope-intercept form is y = mx +b, where the variable m represents the slope of the line and the variable b represents the y-intercept of the line. Since we weren't given the y-intercept, one way to solve this problem is substitute the slope for the variable m and then the x and y values from the ordered pair to solve for b.
y = mx + b
y = 3x + b
-4 = 3(9) + b
Now, we can simplify by computing the multiplication on the right side of the equation.
-4 = 27 + b
Finally, we can find the value for b by subtracting 27 from both sides of the equation to get:
-31 = b
Now, we should substitute this value for b back into our equation with the slope.
y = 3x - 31
Therefore, your answer is y = 3x - 31.
Hope this helps!
Answer:
The correct answer would be y = 3x - 31
Step-by-step explanation:
In order to find the answer to this question, we must use point-slope from, which is listed below.
y - y1 = m(x - x1)
Now we input the ordered pair in for x1 and y1 and the slope in for m.
y - -4 = 3(x - 9)
Then we solve for y.
y + 4 = 3x - 27
y = 3x - 31
