The formula of area of triangle is

where b is the base and h is the height .
First we need to convert the mixed fraction to improper fraction, and on doing so we will get

Substituting the values of A and b, we will get

1m 2m 3m. Please speak English. I could not understand the problem
Answer:
8x - 5y = -75 or y = 1⅗x + 15
Step-by-step explanation:
5x + 8y = 16
-5x - 5x
_____________
8y = -5x + 16
___ ________
8 8
y = -⅝x + 2
↑
slope
Now, Perpendicular Lines have OPPOSITE MULTIPLICATIVE INVERSE <em>Rate</em><em> </em><em>of</em><em> </em><em>Changes</em><em> </em>[<em>Slopes</em>]:
-⅝ → 1⅗ [or 8⁄5]
7 = 1⅗[-5] + b
-8
15 = b
y = 1⅗x + 15 >> Perpendicular Line in <em>Slope-Intercept Form</em>
If wanted in <em>Standard</em><em> </em><em>Form</em>:
y = 1⅗x + 15
-1⅗x - 1⅗x
_____________
-1⅗x + y = 15 [We do not want fractions in our Standard Equation, so multiply by the denominator to get rid of it.]
-5[-1⅗x + y = 15]
8x - 5y = -75 >> Perpendicular Line in <em>Standard Form</em>
I am joyous to assist you anytime.