Select the relation that IS a function. a) {(-6, -5), (3, 2), (10, 8), (3, 3)}

b) {(-2, -1), (5, -1), (16, 3), (-3, -9)}

c) {(5, 10), (-3, 10), (-3, -10), (4, 7)}

d) {(21, 11), (21, 10), (21, 9), (21, 8)}

b is the answer please give me brailiest

last option: rhombus or kite

step-by-step explanation:

a kite and rhombus have the same shape. as we don't have any specific formula for the calculation of area of kite. the diagonals are used to calculate the area of a kite or rhombus.

the formula for area of rhombus is given by:

here, d_1 is the first diagonal and d_2 is the second diagonal.

so,

last option is the correct answer ..

your answer is the frist one

hop i