exam Maths Puzzle Numerical Ability

write the equation in the slope intercept form for the line passing through (2,1) and (-1,3)

I know that slope intercept form is y=mx+b
and the slope is -2/3

any help?

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exam Other Question

This is another question that has me confused. Your explanation or steps would be helpful to solve my other equations. thanks

(x^2y^-1m^-3)^3
____________
2p^-4

thank you Please gave me a step by step explanation/answers for the following three problems using the Absolute value of Equation. Thank you for your help

1. |2x-3|+5=26

2. |3x+5|=11

3. |3-2/5x|=9