Question

what is accelaration and its graph and what is its slope gives

Answer 1

The rate of change in velocity is known as acceleration ..

Answer 2

The equation for acceleration is a = Δv / Δ t. Remember, when using an equation with a delta (Δ), you need to calculate the change: Δ = final value - initial value

So,

Δv = final v - initial v

Δt = final t - initial t

But, velocity (v) is on the y axis and time (t) is on the x axis. So, we could also write this equation as:

a = Δy / Δ x

Hope it is helpful