Question

How do you write an equation of a line with slope 2 and y-intercept 4?

Answer 1

`y=2x+4`

Explanation:

A linear equation has a standard form of:
`y=mx+c`

Where `m` is the gradient/slope and `c` denotes the y-intercept.

So a line which has a slope/gradient of 2 means that `m=2`, so we replace `m` with 2. Similarly, as it has a y-intercept of 4, means that `c=4`, so we replace `c` with 4 in our standard form-equation.

This yields the equation:

`y=2x+4`