First, notice that this equation is written in slope-intercept form which is more commonly known as y = mx + b form where the multiplier, m, or the coefficient of the ex term represents the slope of the line and the <em>b</em> or the constant term represents the y-intercept of the line.
I have attached slope-intercept form below.
Notice that below, the <em>b</em> is in place of the <em>4</em> in the equation.
So the y-intercept or the <em>b</em> is 4.
Answer:
see explanation
Step-by-step explanation:
1
The cosine function in standard form is
y = acos(bx + c)
where a is the amplitude, period = and
phase shift = -
here b = 2 and c = , thus
phase shift = - = -
2
the amplitude = | a |
which has a maximum of a and a minimum of - a
y = 4cosx ← has a maximum value of 4