Answer:
A. 6
Step-by-step explanation:
3x – 15 ≥ 3
Add 15 to both sides
3x ≥ 18
Divide both sides by 3
x ≥ 6
So solutions are any numbers greater than or equal 6
Answer:
A. 6
Y=2x+5
sub 2x+5 for y in other equaiton
10x+3(2x+5)=19
distribute
10x+6x+15=19
minus 15 from both sides
16x=4
divide both sides by 16
x=1/4
sub back
y=2x+5
y=2(1/4)+5
y=1/2+5
y=5.5=11/2
solution is (1/4,11/2) or in decimal, (0.25,5.5)
Point-slope form for a line:
We need a point (x₀,y₀) and the slope (m).
y-y₀=m(x-x₀=
We have the point (-7,2) and the slope (m=6); so:
y-2=6(x+7)
Answer: the equation in point-slope form would be: y-2=6(x+7)
Answer: Slope (m) =ΔY/ΔX=5/2=2.5
