3x+4y=33
2x+y=17 ➡ y=-2x+17
2x+(17-2x)=17
2x+17-2x=17
2x-2x+17=17
17=17
is it infinitely many solutions?

YES

Step-by-step explanation:

3x+4y=33

2x+y=17 ➡ y=-2x+17

2x+(17-2x)=17

2x+17-2x=17

2x-2x+17=17

17=17

same number on both sides means   Infinitely many solutions

:0)

b

step-by-step explanation:

the equation of a line in point- slope form is

y - b = m(x - a)

where m is the slope and (a, b) a point on the line

calculate m using the slope formula

m = (y₂ - y₁ ) / (x₂ - x₁ )

with (x₁, y₁ ) = (0, 4) and (x₂, y₂ ) = (3, - 5) ← 2 points on the line

m = = = - 3

with m = - 3 and (a, b) = (3, - 5), then

y - (- 5) = - 3(x - 3), that is

y + 5 = - 3(x - 3) → b