first use rise over run to find the slope. go up 3 and over four making the slope 3/4. nxet locate the y-intercept which is clearly at -3. now just substitute the values into the equation y=mx+b
Lets say w is the width of the flower bed. We can make an equation to find the area. The length of the of the flower bed is (w+5) and the width is w. To find the area we need to multiply the length(w+5) by the width(w) and set it equal to 84, (w+5)(w)=84 w^2 +5w=84 Using the quadratic equation you get the solutions of 7 and -12. Since 7 is positive it is our width. Our length is 7+5 or 12.
