How do I graph G(x)=-4+7x ?

How many triangles can be drawn with side lengths 4 centimeters, 4.5 centimeters, and 9 centimeters? explain

To solve the system of equations below, pedro isolated the variable y in the first equation and then substituted it into the second equation. what was the resulting equation? { 5y=10x {x^2+y^2=36

Ab and bc form a right angle at point b. if a= (-3,-1) and b= (4,4) what is the equation of bc?