A line has a slope of 1 and a y-intercept of 3. What is the value of y when x is 7?

1 Answer
Jul 23, 2017

y=10

Explanation:

Use slope-intercept format, y=mx+b. m is the slope variable, and b is the y-intercept.

y=mx+b
y=(1)x+3 since m=1 and b=3
y=x+3 simplify: (1)x = x

Now we apply the x value of 7:

y=x+3
y=7+3
y=10