Answer:
equation of a line is given by
y -y1 / x - X1 ==> y2 - y1 / X2 - X1
where yi = 5, y2 = -2
and x1 = -2, x2 = 5
from the equation above
y -y1 / x - X1 ==> y2 - y1 / X2 - X1
y -5 / X -(-2) ==> -2-5 / 5 - (-2)
y -5 / X + 2 ===> -7 /7
y - 5/ X + 2 ===> -1
cross multiply
y -5 ==> -1(X + 2)
y -5 ==> -x -2
collect like terms
y + x -3 = 0
or
y + X ===> +3
Answer:
(2, - 1 )
Step-by-step explanation:
3x - y = 7 → (1)
2x + 3y -= 1 → (2)
multiplying ( 1) by 3 and adding to (2) will eliminate y
9x - 3y = 21 → (30
add (2) and (3) to eliminate y
11x = 22 (divide both sides by 2 )
x = 2
substitute x = 2 into either of the 2 equations and solve for y
substituting into (2)
2(2) + 3y = 1
4 + 3y = 1 (subtract 4 from both sides )
3y = - 3 ( divide both sides by 3 )
y = - 1
solution = (2, - 1 )
Answer:The inequality is
x greater than or equal to(>/=) 14
Step-by-step explanation:
Let x represent the possible cost of the full pizza. Tara eats 3 of the 10 slices and pays $4.20 for her share. This means that the amount of pizza that Tara ate is 3/10×x = 3x/10
Assuming that Tara has paid at least her fair share, therefore
3x/10 = 4.20
3x = 4.20 ×10 = 42
x = 42/3 = 14
This means that the total cost of the pizza is at least $14. The inequality
how much the pizza could have cost becomes
x greater than or equal to(>/=) 14
