The slope form: y = mx + b
m = -3/4 therefore y = -3/4 x + b
The line passes trought the point (5/3, -7) → x = 5/3, y = -7.
Substitute the coordinates of the point to the equation:
-7 = -3/4 · 5/3 + b-
7 = -5/4 + b |+5/4
b = -28/4 + 5/4
b = -23/4
y = -3/4 x - 23/4 - the slope form
y = -3/4 x - 23/4 |· 44
y = -3x - 23 |+3x
3x + 4y = -23 - the strandard form
1.
the line of symmetry is x=2, means that the x coordinate of the vertex is x=2.
the point x=2 is the midpoint of the roots
and
.
so
Remark: in the x-axis, if c is the midpoint of a and b, then
2.
since
and
are roots
and
3.
equalizing:
in the left side factorize a, in the left side factorize 8:
in the right side use the difference of squares formula:
simplify by
substitute
with 4:
a=2
Answer: C)2
The answer is x=
9 - 903
9 + 923
I
= 9,
2
2
Also can I get brainliest
Answer:
<h3><em>x° </em><em>=</em><em> </em><em>1</em><em>6</em><em>°</em></h3>
Step-by-step explanation:
Sorry what is this exactly?