Answer:
2.5
Step-by-step explanation:
Use [tex]\frac{y_2-y_1}{x_2-x_1}[/tex] to figure out.
Substitute and solve:
[tex]\frac{50-0}{70-50} \\\frac{50}{20} \\2.5[/tex]
2.5 is the slope.
Hope it helps!
(Mark Me a brainliest after second answerer plz)