1. Tell whether the ordered pair (5,0) is the solution of the system. x + y = 5 and 3x + y = 15 *

Yes they are.

Explanation:

x + y = 5

=

5 + 0 = 5

3x + y = 15

=

(3 × 5) + 0 = 15

b. 2

step-by-step explanation:

the slope of a line =δy/δx

δy= y₂-y₁

δx= x₂-x₁

therefore, using the points (-2,-3)   and (3,7) we can calculate gradient as follows:

m=(7--3)/(3--2) (a number minus a negative number the sign changes to a plus)

m=(7+10)/(3+2)

=10/5

=2