Which expression is equivalent to -4-9

-13

Step-by-step explanation:

Just play with your minus minus equals minus.

-4-9 = -13

Step-by-step explanation:

If sign of two numbers are same, add and put the same sign for the result

-4-9 = -13

because linear equations are a lot simpler than quadratics equations, and linear equations formula is a lot easier to memorize. that's why i think they're harder.

the slope of the line is 60

one point on the line is (40,10)

step-by-step explanation:

in the equation outside the parenthesis the equation always tells you the slope. in this case it is 60.

in the parenthesis is also says 40 which is x because it is near the x and 10 is y because it is near y.