exam Maths Puzzle Numerical Ability

4x+5y is less than or equal to 20. must graph inequality

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exam Other Question

let (f) represent the number of feet. which algebraic expression represents the number of inches in (f) write the equation of the line with slope -2 and y-intercept (0,0). Then graph the line.

0=-2*0+b
b=0
b=0 y-intercept

y=-2+0
y= -2x

double checking to see if i'm rig