Slope equation question

Question

What is an equation of the line that contains the point  and has a slope of 3?

Answer 1

The equation for a straight line is :

y = m x + b m is the slope of the line

b is the y intercept (the point on the y-axis where straight line crosses it)

For example, what is y- intercept for a straight line containing point ( 4, 6 ) with a slope of 2?

substituting into the straight line equation above

6 = 2*4 + b

6= 8 + b

-2 = b the line crosses the y-axis at the -2 mark

Hope this helps!